Answers

2016-02-13T10:14:48+05:30
1.child's children'
2.hippopotamus's hippopotamuses'
3.passenger's passengers'
4. puppy's puppies'
5. princess's princesses'
6. boss's bosses'
7. man's men' 
8. electronic's electronics' 
9. soldier's soldiers'
10. doctor's doctors'
0
2016-02-13T14:18:35+05:30
Child children
hippopotamus hippopotamuses
passenger passengers
puppy puppies
princess princesses
boss bosses
man men
electronics electronics
soldier soldiers
doctor doctors
1 4 1